Home / 253,916.38-380,897.65-66,927.88

Finding the Fourth Proportional to 253,916.38, 380,897.65 and 66,927.88

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Solution

The fourth proportional to 253,916.38, 380,897.65 and 66,927.88 is: 100,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,916.38 : 380,897.65 = 66,927.88 : x
  2. Step 2: Convert to fraction form
    253,916.38/380,897.65 = 66,927.88/x
  3. Step 3: Cross multiply
    253,916.38x = 380,897.65 × 66,927.88
  4. Step 4: Simplify right side
    253,916.38x = 25,492,670,306.99
  5. Step 5: Solve for x
    x = 25,492,670,306.99/253,916.38
  6. Step 6: Final answer
    x = 100,397.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.